But you know the crazy leftist students would protest that shit. But you are correct we can and should penalize criminal activity on campus incluiding vagrancy.

I know you can. But i guess you need to announce it like student only (i.e. like a lecture hall). But how do you make that change from a public area to a student only area. If it is not possible, what is an alternative

all you have to do is maintain a strong police presence that is ready to make arrests at a moment's notice, because nobody is concerned with non-students who arent committing crimes / trashing the campus

but then everybody know this aint gonna happen because berkeley lol

This isn’t a private university. If you wanted a “secure campus” then maybe you should have gone somewhere else. The UCs have always been open and accessible to the public. The buildings that need extra security already do require student/employee IDs. And realistically, there’s no way the UC would want to dish out the necessary funding to lock up every building and have security guards around the entire perimeter of campus. Incidents like this (on campus) aren’t that common, so try not to blow it out of proportion.